The increasing demand for sustainable and cost-effective manufacturing solutions has led to the development of innovative approaches enhance durability reliability cutting tools. This study presents a novel method shearing tools utilizing interchangeable modular elements loaded by deposition welding with covered electrodes. Using Weibull distribution modeling, comparative analysis between conventionally manufactured shear proposed design demonstrates significant increase in mean time failure...

Brazing is a joining process used to obtain heterogeneous assemblies between different materials, such as steels, irons, non-ferrous metals, ceramics etc. Some application, like asphalt cutters, require quick solutions dissimilar joints at acceptable costs, given the very short period of operation these parts. This paper presents some results obtained during brazing steel and tungsten carbide by using types Ag-Cu system filler materials alloyed with P Sn. The techniques were oxygen-gas flame...

The refurbishment of dies by the deposition welding wear areas is an efficient and economical process. aim this study was to conduct a comparative analysis lifetimes different types for manufacturing wagon wheels. analyzed were manufactured conventional processes (Type I) reconditioned through procedure using dedicated electrode II). Anderson–Darling test conducted analyze goodness fit lifetime data specific die types. maximum likelihood estimation method (MLE) with 95% confidence interval...

Currently, governments and authorities worldwide allocate annually significant amounts of money in an attempt to maintain the existing road infrastructure functional safe. In our country too there is this concern rehabilitate a number damaged structures create new modern ones. The research presented paper focused on applying manufacturing technologies, loading by welding milling teeth for stripped asphalt order increase their reliability. It was thus estimated reliability classical made from...

This paper presents the estimation of main reliability indices two milling teeth types. The comparative analysis referred to manufactured by conventional cutting processes, made 41Cr4 (type I), and high-productivity welding loading namely, laser cladding II). To analyze distributions lifetime data specific types, correlation coefficient value was considered. Goodness-of-fit indicated that normal distribution adopted in order conduct parametric estimates indices. Point estimations parameters...

The quality constant for mill knifes used to strip asphalt is significantly influenced by the of reinforcement which, in its turn, thermic brazing process and manufacturing protection system at blockage through welding when it spins around axis. It's also intelligent wear blocking self-protection systems that their turn are oxidation diffusion processes W C make simmered carbides from brazed joints. Overheating during knife and/or favours leading a fast degradation affected zones, even...

The performed research focuses on the complete replacement of pipeline manufacturing process consisting in welding SAW+MIG / MAG generators with robotized Tandem MIG procedure, low energy consumption.The procedure was experimented X52 MS steel plates destined for manufacture pipelines, measuring 400x150x12 mm, Y-joints (30o).The welded joints were executed horizontally and unilaterally, flux bed support, 3 seams, using filler material two wires same quality, EN ISO 14341: G 42 4 M G3Si1...

The issues from the last decades related to crisis of natural resources, raw materials, equipment, energy etc., gave rise a new concept, namely sustainable development. theory development focuses on quality products provide trust and confidence, so as reliable. On this line paper presents an approach assessing reliability non-reliability milling teeth for asphalt machines classic manufactured those by welding load, which give them self wear protection systems self-lock at rotation. So in...

This paper presents current technologies used for pipe welding. Welding processes such as Tandem and Hybrid (Laser-GMAW) welding are compared to regular 1-wire GMAW. The device positioning the head is an anthropomorphic robot, this type of robot provides everything needed application: low cost, flexibility, sufficient payload precision.

The paper presents technologies for the manufacturing of modulated bi-metal elements, used as interchangeable reinforcement, according to patent RO129865. was developed by surface build-up functional layers that have increased hardness, on a low alloyed steel substrate, so ensure maximum lifespan in exploitation. Welded deposited active areas has thickness 3 mm and high hardness (about 50-60 HRC) order good resistance wear abrasion, possibly combined with fatigue, erosion or corrosion....

The manufacture of pipelines is a complex technological process starting with laminates supply, joints cutting-processing, rolling, welding, calibration, control, packing, delivery. As rule, the welding achieved by on generators through MAG and submerged arc procedures which generally take place completely automatically, affecting quality cost products. Beside series advantages, also has disadvantages; it does not eliminate operator’s intervention implies some high linear energies...

The earthmoving equipment milling teeth of the are made a cutting tip (made tungsten carbide) which, by means direct contact with environment, creates effect penetration, dislocation and body (of alloyed steels), designed so as to achieve spinning around its own axis for uniform wearing tooth. researches carried out presented in this paper were meant increase durability reliability increasing resistance wear tapered parts their tips welding build-up, using MIG/MAG-Cold metal procedure,...

Preventive repeated maintenance concept provides elaborating, developing and reconditioning, repeatedly, in economic efficient conditions, of the pushing blades that equip bulk loading machines, namely leveling them. Applying solution implies elaborating active areas direct contact with processed materials by through welding. To this end base material is chosen to comply addition afferent selected process, for predetermined circle tries, approx. 5 present moment.Research conducted validate...

The pipelines used for carrying fluids and gas, made of specially designed steels in keeping with their intended uses, are obtained by welding on generator or spiral welding, a wide range diameters (from 350 to 1800 mm) pipe wall widths (between 6 40 mm). At present, the following procedures used: automatic submerged arc (with 1 2 wires), combined unilateral bilateral MIG/MAG procedure, according plate thickness edge working method. Ongoing researches focus improving end product [1, 2, 3, 4,...

Research refer to the creation of intelligent systems with self-protection for run-out and rotation self-blocking teeth asphalt uncovering milling cutter, by load WIG welding active bevels procedure, thick hard layers carbides, which offer high resistance severe conditions from exploitation. We have used a tubular rod type adding material specially created this case. A lot loaded in areas were means procedure they tested exploitation on an cutter. The obtained results proved significant...

The research followed the development of deep joint brazing joints with economic efficient materials between reinforcement, made from sintered wolfram carbide, and support, drill bit low alloy steel chromium, earthmoving equipment. procedure selected is heating until semi-products addition reach melting temperature, oxyacetylene flame slightly carburized. pressure reducing manufacturing costs for bits highlighted need to replace alloys Ag156 according SR EN ISO 17672 coated rods type...

The following paper presents the constructive manufacturing solution for low and medium allied powders in continuous flux, by melting caster, using high frequency induction currents - HFIC, wires, base material, continuously discarding melt over a rotating drum, cooled at determined speed, thus optimizing movement cooling parameters we can obtain proper grain size.The functional model has capability to achieve alloyed within broad range of size, recommended research. furnace be supplied with...

The paper presents the manufacturing process of two classes material that feature intelligent precursors, used for welding/cladding, and deposit layers with viable physical proprieties, can be predetermined by a precise well-balanced programming parameters. fields use these materials are those welded structures have equal resistant joints, made from stainless steel austenitic-ferrite-martensitic structure or mixes above mentioned structures, possibility machining, in state, namely...

The ever-increasing number of vehicles on the roads has created need to expand or rehabilitate road infrastructure, and milling cutting drums used for top striping play a major role in these operations.The main components involved directly structure dislodging process are their teeth.A tooth is basically made up body itself tungsten carbide tip that fastened by brazing.There currently various teeth manufacturing processes, but our paper we chose consisting welding loading active part...